The fact she was on the ship is by its self a reason to test for it

Did you even read the full quote? By the time her tests were back in 24 hours, she probably would’ve been on death’s door had she still been on the ship. They clearly got her medical care as soon as they landed, and I seriously doubt they were sending her home.

I’m sorry, but the fact you’re calling it “Hanta Virus” tells me I should trust the doctors/epidemiologists and Spain’s health minister more than I trust some rando on the Internet spitballing “well they should’ve just done [thing]!!” Her condition began deteriorating literally on the evacuation plane; they didn’t just send her home.